Yazar "Sanlioglu, Ismail" seçeneğine göre listele

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    A COMPARISON WITH ORTHOMETRIC HEIGHTS OBTAINED BY REAL TIME KINEMATIC AND BY LOCAL GEOID MODEL, CASE STUDY IN ADANA
    (INT SCIENTIFIC CONFERENCE SGEM, 2011) Sanlioglu, Ismail; Maras, Suleyman Sirri
    The aim to the research was to compare orthometric heights, determined by real-time kinematic (RTK) Global Positioning System observations and local geoid models in Adana city, Turkey. GPS network had been established according to Large Scale Map and Map Information Production Regulations (LSM&MIPR) in Adana metropolitan city at 2008. In study field total area is 663.05 km2 451 stations which are 2 items Turkish National Fundamental GPS Network (TUTGA) points, 6 stations graded by C1, 35 stations graded by C2 and 410 stations graded by C3 appropriately to BSH&MIPR. Geometric leveling had been carried out to determine orthometric heights of unknown heights of stations using by digital levels. Adana geoid model had been determined using second order-nine parameter multiquadratic surface fitting benefiting 409 control points. Root mean square of model is +/- 2.3 cm. Geoid undulations of 30"x30" spacing grid points were computed from Adana geoid parameters to use in regional geoid model file (rgm format) for Topcon RTK GPS receivers. The orthometric heights obtained by Topcon receivers have been compared with original heights in the chosen test area.
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    Monitoring landslides with geophysical and geodetic observations
    (SPRINGER, 2015) Zeybek, Mustafa; Sanlioglu, Ismail; Ozdemir, Adnan
    The objective of this study was to evaluate and predict land movement by integrating geodetic, geophysical and meteorological data in a landslide area. Specifically, electrical resistivity tomography surveying, Global Navigation Satellite System and terrestrial laser scanning techniques were integrated to monitor a landslide. The study area lies to the southeast of the town of Ta kent in southern Turkey, close to Balcflar in the Central Taurus mountain chain. Landslides result in considerable damage to structures, farmland and the environment in this area; therefore, it is important to characterise the size, extent and timing of past land movements in order to mitigate damage from future landslides. Analysis presented in this paper shows that the greatest land movements in the region occur in spring, when average motions can be up to 1.5 m per month. It is demonstrated that integrated techniques provide a better means for monitoring landslide processes and gathering data for predictions of future movements. Mapping landslide movements by integrating geophysical and geodetic observations can provide a meaningful evaluation of a landslide and its dynamics.
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    PHOTOGRAMMETRIC SURVEY AND 3D MODELING OF IVRIZ ROCK RELIEF IN LATE HITTITE ERA
    (UNIV AGEAN, DEPT MEDITERRANEAN STUD, 2013) Sanlioglu, Ismail; Zeybek, Mustafa; Karauguz, Gungor
    In this study, the photogrammetric measurement technique was used to document the Ivriz relief, which is located under the Kocaburun Rock on Mount Aydos in the village of Ivriz (Aydinkent), Konya-Eregli. This relief has been standing since B.C. 720 but suffers from man and environmental agents. It has been standing high from ground on rock facade. Therefore a 3D (three-dimensional) model of the monument was obtained as a result of the work conducted for protection. Conservation has been done by close-range photogrammetry technique. Using close-range photogrammetry, in which only some brief field work was done with a majority of the other work being conducted in an office, documentation can be efficiently performed using free equipment and software as well as scaled archives to produce three-dimensional models of historical and cultural heritages in a digital environment.